The most bullish value is a +10 and the most bearish is a -10. A completely neutral result is 0. The long term average is closer to +2 since the stock market goes up more frequently than it goes down.

How you use it is up to you. After all, you are your own boss! We can say that some people prefer to use their own strategies and setups for trading, and use the Index as something like a confirming signal.

No! The Swingex Index is not a sentiment indicator. It was designed to detect conditions that often precede near-term market movements. Market sentiment can sometimes be one of the inputs, though.

Not necessarily. An extreme negative number can also be interpreted as a high probability of a smaller dip in the market.

No. Currently the Index is found exclusively here on swingex.com.

It is not supposed to tell you what is happening now. The Swingex Index was designed to be a leading indicator of what is coming in the next few weeks. High readings of the index can occur during a currently falling market, and vice-versa.

Yes, of course you can. You will need to invest some time and money. Or just buy something that already works. The choice is yours.